2154681932 has 24 divisors (see below), whose sum is σ = 4299615936. Its totient is φ = 935970048.

The previous prime is 2154681931. The next prime is 2154681937. The reversal of 2154681932 is 2391864512.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2154681932.

It is not an unprimeable number, because it can be changed into a prime (2154681931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217828 + ... + 1219595.

It is an arithmetic number, because the mean of its divisors is an integer number (179150664).

Almost surely, 2^2154681932 is an apocalyptic number.

It is an amenable number.

2154681932 is a deficient number, since it is larger than the sum of its proper divisors (2144934004).

2154681932 is a wasteful number, since it uses less digits than its factorization.

2154681932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437457 (or 2437455 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 2154681932 is about 46418.5515930861. The cubic root of 2154681932 is about 1291.5990690137.

The spelling of 2154681932 in words is "two billion, one hundred fifty-four million, six hundred eighty-one thousand, nine hundred thirty-two".